Ive used Loom before and really like it but they recently switched how many videos you can store on the free plan and it really cut down on how I can use it. I used it to send quick project instructions to team members that are overseas, they rely on it so they can replay it at a speed they are comfortable with understanding the instructions.

Its interesting Dropbox is getting into this. My first thought is users can use storage faster than they would with normal documents by making Gifs and other videos. In my Loom library I had 110 videos at one time that were between 2-5 mins long.